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https://issues.apache.org/jira/browse/HIVE-24438?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stamatis Zampetakis reassigned HIVE-24438:
------------------------------------------


> Review shutdown hooks for memory leak
> -------------------------------------
>
>                 Key: HIVE-24438
>                 URL: https://issues.apache.org/jira/browse/HIVE-24438
>             Project: Hive
>          Issue Type: Task
>            Reporter: Stamatis Zampetakis
>            Assignee: Stamatis Zampetakis
>            Priority: Major
>
> Shutdown hooks cannot be garbage collected till the JVM shutdown making the 
> application prone to memory leaks. In many cases shutdown hooks are 
> registered through the use of an anonymous class. If the class is created 
> from non-static context then the hook implicitly holds a reference to an 
> enclosing instance that is not always desirable and can lead to memory leak.
> The goal of this issue is to review calls registering shutdown hooks and 
> eliminate any reference to enclosing instances if that is possible. 
> Check the callers of:
>  * ShutdownHookManager#addShutdownHook(java.lang.Runnable)
>  * ShutdownHookManager#addShutdownHook(java.lang.Runnable, int)
>  



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